Add comprehensive Docker deployment and file upload functionality

Features Added:
• Docker containerization with multi-stage Python 3.12 build
• Caddy reverse proxy integration with automatic SSL
• File upload interface for .claude.json imports with preview
• Comprehensive hook system with 39+ hook types across 9 categories
• Complete documentation system with Docker and import guides

Technical Improvements:
• Enhanced database models with hook tracking capabilities
• Robust file validation and error handling for uploads
• Production-ready Docker compose configuration
• Health checks and resource limits for containers
• Database initialization scripts for containerized deployments

Documentation:
• Docker Deployment Guide with troubleshooting
• Data Import Guide with step-by-step instructions
• Updated Getting Started guide with new features
• Enhanced documentation index with responsive grid layout

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

init_db.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+"""
+Database initialization script for Claude Code Tracker.
+This script ensures the database is properly initialized before the application starts.
+"""
+
+import asyncio
+import os
+import sys
+from pathlib import Path
+
+# Add the app directory to the Python path
+sys.path.append(str(Path(__file__).parent))
+
+from app.database.connection import init_database, engine
+
+
+async def ensure_database_initialized():
+    """Ensure the database is properly initialized."""
+    try:
+        print("Initializing database...")
+        
+        # Create data directory if it doesn't exist
+        data_dir = Path("/app/data")
+        data_dir.mkdir(parents=True, exist_ok=True)
+        
+        # Set permissions on data directory
+        os.chmod(str(data_dir), 0o777)
+        
+        # Initialize database
+        await init_database()
+        
+        print("Database initialization completed successfully!")
+        return True
+        
+    except Exception as e:
+        print(f"Database initialization failed: {e}")
+        # Don't exit - let the app try to continue
+        return False
+    finally:
+        # Clean up engine
+        try:
+            await engine.dispose()
+        except:
+            pass
+
+
+if __name__ == "__main__":
+    asyncio.run(ensure_database_initialized())